Which three approaches can be used while migrating from an IPv4 addressing scheme to an IPv6 scheme.

A.	enable dual-stack routing
B.	configure IPv6 directly
C.	configure IPv4 tunnels between IPv6 islands
D.	use proxying and translation to translate IPv6 packets into IPv4 packets
E.	statically map IPv4 addresses to IPv6 addresses
F.	use DHCPv6 to map IPv4 addresses to IPv6 addresses